JPH062132U - Internal lighting staff - Google Patents

Abstract

(57) [Summary] [Purpose] To enable easy and accurate surveying in dark places such as nighttime surveying and underground surveying. Structure: A scale 31 provided on the inner surface of a back plate 13 of the case 10 is illuminated by a required number of lighting means 20 arranged inside a side plate 11 of a long case 10 having an opening 10a extending in the longitudinal direction on the front surface. The guide slit 14 formed in the side plate 11 is provided with the illuminating means 20.
It can also be movable in the longitudinal direction along.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a leveling rod for collimation in leveling, and particularly to a leveling rod that can be used for surveying in a dark place such as nighttime surveying or underground surveying.

[0002]

[Prior art]

 As shown in Fig. 6, the leveling for measuring the height difference between each measuring point is performed by a worker called a staffman. The scales 1a, 1 of the staff (staff) 1 set up vertically at each measuring point A, B. b is performed by the measurer by using the leveling instrument (level) 2 on the horizontal collimation line L. For example, at night, surveying, shields, tunnels, etc. For surveying in a dark place, the staff member needs to illuminate the staff 1 with a flashlight 3 etc. in order to make it easier to read by the leveling instrument 2.

[0003]

[Problems to be solved by the device]

 However, in this case, the staffman must hold the flashlight 3 and the like, so that the staff 1 must be supported by only one hand, and therefore, the tilting of the staff 1 is likely to cause a surveying error. Holding the flashlight 3 or the like at the same position and angle with one hand is a pain, and there is a problem that the leveling instrument 2 becomes difficult to read due to the deviation of the irradiation position and angle.

The present invention has been made under the above circumstances, and an object thereof is to make it possible to easily and accurately perform surveying in a dark place such as nighttime surveying or underground surveying. Especially.

[0005]

[Means for Solving the Problems]

 The above technical problems can be effectively solved by the present invention. That is, a typical internal lighting type staff according to the present invention is a long case having an opening extending in the longitudinal direction at the front, a required number of illuminating means arranged on the inner surface of the side plate of the case, and the case. And a scale provided on the inner surface of the back plate. In this case, the illuminating means may be movable in the longitudinal direction along a guide slit formed on the side plate of the case.

[0006]

[Action]

 According to the typical internal lighting staff of the present invention, the scale provided on the inner surface of the case back plate that is visible from the outside through the front opening of the case is illuminated by the lighting means arranged on the inner surface of the side plate of the case. It can be read clearly even at night or in dark places. Further, in this case, by making the illuminating means movable in the longitudinal direction along the guide slit formed on the side plate of the case, it is possible to illuminate the scale in a necessary range efficiently.

[0007]

【Example】

 FIG. 1 is a partial perspective view showing a first embodiment of an internal lighting type staff according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is used in a dark place. It is a partial front view showing a state. In the figure, reference numeral 10 is a long rectangular parallelepiped case having an opening 10a extending in the longitudinal direction formed on the front surface, and 20 is a light (incandescent light bulb, fluorescent lamp, or the like) as lighting means arranged in the case 10. ), 30 is a reflective graduation plate made of an opaque material such as a metal plate with a graduation 31 having a clear contrast.

The light 20 is turned on and off by a power source 21 such as a dry battery housed in a housing portion 15 provided on the outer surface of the back plate 13 of the case 10 through a conductive means such as an electric wire and a switch (not shown). The upper and lower sides of the space 10b in the case 10 are provided on the right and left sides of the space 10b, and the upper and lower sides of the space 10b are provided in total of four. Guide slits 14 extending in the longitudinal direction are formed on the left and right side plates 11, 11 of the case 10, respectively, and the sliding plate 24 is provided on the back surface of the sliding plate 24 so as to project from the guide slit 14 to the side plate 11. The inner surface of the side plate 11 is slidably fixed along the guide slit 14 by the male screw 26 protruding to the outside and the wing nut 27 screwed to the male screw 26, that is, the wing nut 27 is tightened and loosened. Thus, the light 20 is fixed in the case 10 at an arbitrary position in the longitudinal direction.

The scale plate 30 is attached to the inner surface of the rear plate 13 of the case 10, and the scale 31 drawn on the front surface of the scale plate 30 is between the front opening 10 a and the lights 20, 20 on both sides in the case 10. It can be read from the outside through the space 10b. The scale 31 may be directly drawn on the inner surface of the back plate 13, and a transparent acrylic plate (not shown) is provided between the brim-shaped bent ends 12, 12 on the front side of the side plates 11, 11. It is more preferable that the opening 10a is closed by a formula so as to protect the inside of the case 10.

The internal lighting type staff of the present embodiment turns on the left and right lights 20 by operating a switch, for example, at the time of leveling at night or at the time of surveying in a dark place such as a tunnel, tunnel, etc. And the reflective scale plate 30 in the case 10 that is visible from the front opening 10a is illuminated from both the left and right sides, and as shown in FIG. 3, the scale is formed between the flange-shaped bent end portions 12, 12 on the front side of the case 10. Since 31 is light and bright so as to rise from the opening 10a, the scale 31 can be easily and accurately read by the leveling instrument. Further, the illumination position of the light 20 can be adjusted to the vicinity of the height of the collimation line (see reference symbol L in FIG. 6) by operating the wing nut 27, and the portion required for reading can be efficiently illuminated.

Therefore, the staff (staff man) who sets a measuring staff at the measuring point of the surveyed site can use a flashlight or the like with one hand when surveying at night or when surveying in a dark place such as a tunnel or a tunnel. Since it is not necessary to illuminate the scale 31 with a hand, the staff can be held firmly with both hands, and the scale 31 of the desired height can be clearly read, so that the surveying can be performed accurately and quickly. .

The length of the internal illumination type staff in the above-described embodiment is appropriately set according to the usage conditions and the like, and is not particularly limited. In addition, as shown as a second embodiment in FIG. 4, a suspending metal fitting 16 having a plurality of holes 16a is projectingly provided on the upper end of the case 10 so that it can be hung on the ceiling of the tunnel when surveying inside the tunnel. An appropriate member may be provided according to usage conditions such as a structure suitable for lowering.

In addition, the present invention can be variously modified, for example, the light 20 can be provided only on the inner side of the one side plate 11. Further, as shown as a third embodiment in FIG. 5, if the opening 10a and the guide slit 14 are formed to a length that does not reach the lower end 10c of the case 10, there is a water pool at the measuring point where the staff is set. In such a case, it is effective for waterproofing, and in this case, the inside of the box-shaped lower end portion 10c can be used as the accommodating portion of the power source 21. Further, if the operation is performed through a metal plate provided on each inner surface of both side plates 11 of the case 10 and a contact provided on the sliding plate 24 and in contact with the metal plate, the front face of the scale plate 30 can be obtained. There is no problem in that reading is hindered by the visible wires on the side.

[0014]

[Effect of device]

 According to the internal illumination type staff of the present invention, the desired position of the scale on the inner surface of the back plate of the case can be surely illuminated by the lighting means arranged inside the side plate of the case, so that the scale is opened from the front opening of the case. Can be clearly read, and therefore the operator who sets this staff at the measuring point does not have to illuminate the scale with a flashlight with one hand even when surveying at night or in a dark place. Since the scale is inside the case, it is not easily soiled, and surveying can be performed accurately, easily and quickly.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an internal lighting type staff according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a partial conceptual diagram showing a state in which the internal-lighting staff of the above embodiment is used in a dark place.

FIG. 4 is a partial perspective view showing an internal lighting type staff according to a second embodiment of the present invention.

FIG. 5 is a partial perspective view showing an internal lighting type staff according to a third embodiment of the present invention.

FIG. 6 is an explanatory diagram showing an example of a conventional leveling method at night or in a dark place.

[Explanation of symbols]

 10 case 10a opening 11 side plate 13 back plate 14 guide slit 20 light (illuminating means) 21 power supply 24 sliding plate 25 clamp 26 male screw 27 wing nut 30 scale plate 31 scale

Claims (2)

[Scope of utility model registration request] 1. A long case having an opening extending in the longitudinal direction on the front, a required number of lighting means arranged on the inner surface of the side plate of the case, and a scale provided on the inner surface of the back plate of the case. An internal lighting type staff that is equipped. 2. The internal illumination type staff according to claim 1, wherein the lighting means is movable in the longitudinal direction in the case along a guide slit formed in a side plate of the case.